MP SERIES™ Battery Backup System for Traffic Signals: MP2000E System
Volume One: Operating Manual
Page 2-5
The USB and /or DB-9 female connector is used to connect the MP2000E to the host computer
for remote control, monitoring, and calibration via RS232 commands.
The MP2000E USB is a USB Type B connection. The MP2000E DB9 connection is female. Use
a shielded straight-through cable or use a USB to DB9 adapter for a DTE to DCE serial
communications configuration. For Ethernet use CAT5E RJ45 cable.
See Section 6.c for more details about connection and use.
2.c.4 Control Terminal Block
Figure 2-6: MP2000E Battery Backup System Control Terminal Block
This 22 position terminal block provides communication with the intersection controller,
controls the Power Transfer Switch (PTS), and starts the self-test. Figure 2-7 describes the
terminal block functions. Figure 2-10 shows the operation of the PTS.
Note: Each of the terminal block’s six individual dry contact closure indicators
are 1 form-C isolated unto themselves. The contact closures default Common
(C) to Normally Closed (NC) in the de-energized position.
The PTS (+) and (-) are in parallel with the MP2000E front panel shell connector
(+) and (=).
SELECTED CONTROL TERMINAL BLOCK FUNCTIONS
On Batt
This relay energizes when utility Input line power is unqualified.
Low Battery
These relays energize when the battery drops below the programmed
battery capacity. The default value is 47.5VDC or 40% battery capacity.
Note: You can change the preprogrammed value to match the batteries
used and the actual operating conditions. See Section 6.c.4, Figure 6-19.
Timer
These relays energize after the unit has been in Battery mode for the
programmed time period. The factory default value is two hours.
Note: The time can be programmed to be from 15 min. to 8 hours in 15
minute increments.
Figure 2-7: Control Terminal Block Functions
